<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>Loading加载</title>
  <style>
    .relative {
      position: relative;
    }

    .loader-ring {
      position: absolute;
      top: 50%;
      left: 50%;
      margin: -120px 0 0 -120px;
      width: 240px;
      height: 240px;
    }

    .loader-ring-light {
      width: 240px;
      height: 240px;
      -moz-border-radius: 240px;
      -webkit-border-radius: 240px;
      border-radius: 240px;
      -moz-box-shadow: 0 4px 0 #00abf2 inset;
      -webkit-box-shadow: 0 4px 0 #00abf2 inset;
      box-shadow: 0 4px 0 #00abf2 inset;
      animation: rotate-360 2s linear infinite;
    }

    .loader-ring-track {
      position: absolute;
      top: 0;
      left: 0;
      width: 240px;
      height: 240px;
      -moz-border-radius: 240px;
      -webkit-border-radius: 240px;
      border-radius: 240px;
      -moz-box-shadow: 0 0 10px 4px rgba(0, 0, 0, 0.3) inset;
      -webkit-box-shadow: 0 0 10px 4px rgba(0, 0, 0, 0.3) inset;
      box-shadow: 0 0 10px 4px rgba(0, 0, 0, 0.3) inset;
    }

    @keyframes rotate-360 {
      from {
        -moz-transform: rotate(0);
        -ms-transform: rotate(0);
        -webkit-transform: rotate(0);
        transform: rotate(0);
      }
      to {
        -moz-transform: rotate(360deg);
        -ms-transform: rotate(360deg);
        -webkit-transform: rotate(360deg);
        transform: rotate(360deg);
      }
    }

    body {
      background-color: rgba(0, 0, 0, 0.87);
    }
  </style>
</head>

<body>
  <div class='loader-ring'>
    <div class='loader-ring-light'></div>
    <div class='loader-ring-track'></div>
  </div>
</body>

</html>